steven isberg is an economist with the university of baltimore. baltimore: "ttey'reebooh talkiig about ways to reduce both talking about ways to raise reveeue." mitt romney would extenddthee bush era ttx cuts.he calls for an across- he- board cut inn marginal ratessa cut in he &pcorporate tax rate to 25 estate tax, as well as other taxes on capptal gains of 200 ttousand dollars or less. obama: "itts math. it's arithmatic."president obama either forcc $5 trillion uld - &pdollars in uts or add it to thh defiiit.a claim romney denis deniesobama would end the bush era tax cuts for those making 250-thousand doolars or more. he also wants to implleent rule', where millionaires pay a mmnimum 30 percent tax rates. all in aa effort to move toward a balanced budgett steven isberg, university off sse the calculation as to how both of those gentlemen are getting to that numberr and i havee't seen that yet." when it comes to dollars and cents-- the money youull be paying under either president obama or president romnny comes out to about the same. baltimmre: "